Place a glass or Mason jar face-down in the center of the puff pastry. Cut pastry into 4 equal strips with a sharp knife, stopping at the border of the glass. Cut through each quarter again, making 8 strips, and again, ending up with a total of 16 equal parts, while keeping the centre intact. Twist 2 parts away from each other; pull outward and seal seams together. Repeat with the rest of the parts until pastry resembles a star.